Alarge uniform density cube of mass m and side l is floating upright in a pond exactly half submerged. a small steel ball of mass m/2 is dropped directly over its center from the height h. assume that the head-on collision is perfectly elastic and that the steel ball rebounces vertically, 1. find the height the steel ball rebounds. 2. find the depth to which the large cube descends. express your answers in terms of m, l, g, and h. neglect all forms of dissipation and assume that the water surface remains level at all times